Add a LiveCD to GRUB

This tutorial explains how to add a LiveCD as an entry for your GRUB menu. This is especially useful for backing up your boot drive, or when you may need to troubleshoot an installation. I have provided an example using Ubuntu LTS; these entries should be similar for other Debian based distributions.
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First edit the grub.cfg file, and modify (hd1,2) according to your drive and partition number.